I just had an oil service done on my car and the CBS was reset to an interval of 2 years, or 32,000 kms (20,000 miles). The dealer uses BMW LL01 5W30 (BMW rebranded Castrol). I was pretty surprised at this new interval - previous oil change specified a 26K km (15K mile) interval. Guess this is the new standard in Canada. I have a 2008 335i.

My CBS is always reset to 15K Miles or 12 months. I never listen: I do 10K miles or 6 months.